TORTHAÍ
IN FOCLÓIR GAEILGE—BÉARLA
deichiú, m. (gs. ~, pl. -chithe) & a3. Tenth. 1. a. (Prefixes h to vowels; in gs. either nom. or gen. of article and accompanying noun may be used) An ~ fear, bean, háit, the tenth man, woman, place. Cuid an ~ fear, an ~ fir, the tenth man’s share. Cuid an ~ bean, na ~ mná, the tenth woman’s share. An ~ duine fichead, the thirtieth person. 2. Tenth part. Trí dheichiú de rud, three-tenths of sth. (Var: deicheamhadh m & a1)
ABAIRTÍ
IN FOCLÓIR GAEILGE—BÉARLA
An dara, an deichiú, ~, the second, the tenth, part.
Ón deichiú céad i leith, from the tenth century onwards.